title: Second-order schedules: extended sequences of behavior controlled by brief environmental stimuli associated with drug self-administration.
mesh_terms: D000818:Animals; D001522:Behavior, Animal; D003042:Cocaine / Q000008:administration & dosage; D004334:Drug Administration Schedule; D004777:Environment; D006801:Humans; D007273:Injections, Intramuscular; D007275:Injections, Intravenous; D008253:Macaca mulatta; D009020:Morphine / Q000008:administration & dosage; D009538:Nicotine / Q000008:administration & dosage; D051381:Rats; D012453:Saimiri; D012646:Self Administration; D019966:Substance-Related Disorders
chemical_list: D009538:Nicotine; D009020:Morphine; D003042:Cocaine